Hopefully it's not as bad as it might seem. WH Smith apparently is just one "newsagent" among a greater number in the UK. And they are not very popular, according to this article:
http://news.bbc.co.uk/2/hi/uk_news/magazine/8708145.stm
So it might be that aspiring young hunters can find and buy the magazine at other stores, which I'd think would be a win-win for shooting sports enthusiasts.